Estimation of thermal conduction in hollow-glass-beads-filled cement-based composites by variational asymptotic homogenization method

Xiao, Peng; Yifeng, Zhong; Wang, Peng; Luo, Dongmei

doi:10.1016/j.applthermaleng.2019.114191

Cited by 20 publications

(5 citation statements)

References 29 publications

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“…Eqs. ( 55) and (56), define the values of the axial and shear microelastic stiffness at each ligament orientation ψ. In other words, two anisotropic elastic potentials are defined, and then two equivalent springs whose stiffness is continuous trigonometric functions of the bond orientation ψ and the four elastic material constants that define classical Cauchy orthotropic in-plane elasticity [41].…”

Section: The Micropolar Mechanical Modelmentioning

confidence: 99%

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A continuum-molecular model for anisotropic electrically conductive materials

Diana

Carvelli

2021

International Journal of Mechanical Sciences

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Section: The Micropolar Mechanical Modelmentioning

confidence: 99%

“…4, and from the bottom to the top face in Fig. 5, being the remaining surfaces assumed to be electrically insulated [55,56]. The electric current fluxes concentrate around the inclusions due to their higher conductivity properties.…”

Section: Anisotropic Electrical Conductionmentioning

confidence: 99%

A continuum-molecular model for anisotropic electrically conductive materials

Diana

Carvelli

2021

International Journal of Mechanical Sciences

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“…Результаты экспериментальных исследований показали, что добавление микросфер в состав многослойной изоляции позволяет уменьшить количество изоляционных слоев, тем самым снизив вес изоляционной конструкции при сохранении низких значений коэффициента теплопроводности. В статье [14] авторами была представлена трехмерная модель элементарной ячейки в форме куба со случайным распределением полых микросфер в матрице. Авторы провели численные исследования коэффициента теплопроводности композита с HGM.…”

Section: Introductionunclassified

Results of the development of the technology of light-weight concrete based on diatomite rocks and instrument study of its thermal conductivity

Sinitsin

Soloveva

Akhmetova

et al. 2023

«Izvestiya vysshikh uchebnykh zavedenii. PROBLEMY ENERGETIKI»

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THE PURPOSE. One of the directions of energy saving and energy efficiency improvement is the reduction of consumption of fuel and energy resources. A large amount of thermal energy is spent on heating buildings and structures during the heating season. To reduce heat losses through the building envelope, various heat-insulating materials with low thermal conductivity are used. The purpose of this research was to study the problem of developing the technology of lightweight concrete based on diatomite rocks, as well as uneven inclusions of filler from microspherical granules arising during its creation, assessing the effect of the presence of zones not occupied by microgranules on the insulating properties of the composite material, as well as determining the effect of the volume content of microspherical granules on the value of thermal conductivity.METHODS. In this work, we studied the production of lightweight structural concrete with porous aggregate synthesized from diatomite rocks of the Vladimir region, as well as the effect of the presence of zones not occupied by microgranules on the insulating properties of the composite material. RESULTS. The results showed that the distribution of microgranules in the matrix has a significant effect on the insulating properties of the composite, and the presence of voids in the material contributes to heat losses and a decrease in the thermal resistance of the material.CONCLUSION. The technology for obtaining the developed concrete does not differ from the technology for the production of high-class concrete, which allows the use of widely used concrete equipment.

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“…Hollow glass beads (HGBs) have many excellent properties such as low density; high melting point; good electrical, heat and sound insulation; high temperature resistance and shrinkage resistance [ [1] , [2] , [3] , [4] ]. They are widely used in composite materials; stealth coatings; the aerospace field; the deep-sea field; electrical, thermal, sound insulation materials, and military explosives [ [5] , [6] , [7] , [8] , [9] ]. For example, HGB/epoxy resin composites prepared from HGBs are lightweight but have high compressive strength [ 10 ].…”

Section: Introductionmentioning

confidence: 99%